My local large supermarket has a car park (no coverings/roof). I go to this supermarket maybe once a month. I think maybe 40% of the time I am approached by a homeless person in the car park. Today, just as I'd parked up in the parent&child bay, a man knocked on the car window which immediately startled me. I think I am a bit over-nervous about these things but I usually lock the car doors immediately after I get in. He shouted loudly if he could speak to me. I said no, and he said please to which I said no again. He then walked off, but I was too nervous to take out DD and go to the lockers. We were there to use the Amazon lockers which are outside in the car park and I was worried I might have annoyed the man by refusing to speak to him and felt best that we didn't loiter. So we didn't get out of the car and drove away. Ordinarily I would not want to report something like this as I do feel for homeless people. They have nowhere to go, they're probably making whatever they can to survive and a car park probably does get a good footfall. But today it felt intimidating.
AIBU to report it to the supermarket and ask for more security presence outside?
Edit to add: I haven't already reported it. I am thinking of doing it. But will only do it if the consensus is that it is a fair thing to do.